It's what is listed as the fuel recommended in the BMW 650 scooter - which is the REx engine. With the finicky issues some have had with the REx, I stick with Premium - why tempt fate? The extra 60 cents a tank, I'm good withI see that BMW recommends premium gas for the REX models, but is this necessary?
Good point, thanks.MKH wrote: ↑Tue Jul 21, 2020 11:50 amIt's what is listed as the fuel recommended in the BMW 650 scooter - which is the REx engine. With the finicky issues some have had with the REx, I stick with Premium - why tempt fate? The extra 60 cents a tank, I'm good withI see that BMW recommends premium gas for the REX models, but is this necessary?
I remember reading a study some time back, on a test that showed that running regular gas in a car where premium was recommended actually cost more, because the lower octane gas resulted in poorer MPG.
I have 4 5j whells size on front and rear with 155 standard tyre size. I would like to know if i can put out 175 60 19 tyres on my rear wheels.... Does anybody knows?eNate wrote: ↑Mon Jul 20, 2020 3:33 pmFor what it's worth, Jim, the 155 is the minimum tread width recommended for a 5.0" wheel. 165 or 175 is preferred. 185 is max.
A 5.5" wheel, on the other hand, goes 165 minimum, 175-185 preferred, 195 maximum.
I recall coming across an SAE table with these figures, but can't find it, so this link will have to suffice: https://www.tiresandco.ca/tire-equivalence-advice.html
Now I imagine BMW maybe found running minimum tread width maximizes efficiency, but if that's the case, why did they chose the rear combination that they did, rather than a 6.0 wheel, or 165 tread.
But in any case, I don't want anybody reading this thread to leave thinking 175 tires on 5.0 rims is unsafe or compromised.
The 17 5 will definitely fit the 5.9 wheel.
Thanks, so 1cm more on each side with the 5j wheels specific offset using 175 60 19. The offset on the 5,5j wheels is higher than the 5j value, so my rear tyre will be more apart from the center of the car than if using the 5,5j? Or does the offset is diferent due the diferent wheel size 5j vs ,5j?eNate wrote: ↑Thu Apr 22, 2021 8:06 amThe 17 5 will definitely fit the 5.9 wheel.
You need to determine if the extra rubber will clear the suspension components.
When I've done this on other vehicles, I've used a socket from a ratchet set that's about the diameter on equal to the reduction in clearance as a result of the fatter tire (or wheel).
In your car the tire sidewalls will each stick out 10mm ether side. I'd find a socket that's 11 or 12mm diameter and run it along the inner sidewalks. If there a clearance that the socket can't squeeze through, that's a potential point of contact.